100 MW BESS under construction in Webb, TX — Electric Reliability Council of Texas, Inc.
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
—
Operating Since
Coordinates
27.4561, -99.4173
County
Webb, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Seven Flags BESS LLC | — | — |
| Owner(s) | Seven Flags BESS LLC | — | — |
| Status | Under construction | — | — |
Seven Flags BESS LLC, plant ID 66689, is a 100 MW battery energy storage system (BESS) located in Webb County, Texas. The facility is owned and operated by Seven Flags BESS LLC. It consists of a single generator utilizing batteries as its primary fuel source, measured in MWh. The plant operates within the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority, falling under the TRE NERC region.
Seven Flags BESS LLC is ranked as the 217th largest plant in Texas out of 224, and nationally it is ranked 509th out of 514. Public information indicates that the plant has been the subject of 7 news articles, with 5 focusing on deals and 2 on industry-related topics.
Generated from EIA, GEM, and public data sources
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Seven Flags BESSERCOT-23INR0351
No generation data available for this plant.
No financial data available for this plant.
Point of Interconnection
Nearest Substation
Wormser Road Substation · 138 kV
Substation Distance
< 10 km
Operator
American Electric Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
—
Pricing Hub
HB_SOUTH
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
Last updated 2026-03-26
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